In biology, there are four big main ideas that are discussed in the subject matter. Evolution, free energy, information, and systems are the main topics taught in biology. Evolution is the adaptation of all living things that all point to the same ancestor. Many things that affect evolution such as small sample size, non-random mating, mutation, immigration or emigration, and natural selection. A species niche is one of concepts in biology that can easily explain evolution. In a habitat, no two species can occupy the same niche at the same time. Because of this principle, different species would often compete for space in order to complete their niche. This competition would often result in organism dying out of many species are using the same type of resources for their niche. When the species die out, evolution kicks in and the other species evolve and improve their genetic code in order to find a way to fill the missing niche. …show more content…
Free energy is constantly flowing through the sun, earth, organisms, and many other systems in the world. Energy is never created nor destroyed, but instead converted. This is easily explained using food chains in ecosystems. Energy flows in one direction, from the sun giving off light energy to plants to animals eating the plants to other animals eating other animals. Energy in ecosystems is generally converted from the consumption of other living things or the conversion of photosynthesis and respiration. The third big main idea of biology is information. Information in biology is information that flows from organism to organism and from generation to generation. Information that is carried over from generation to generation can be known as DNA. When species reproduce, they form a completely new blueprint of DNA that makes one unique specimen. That DNA makes up the appearance, chemical makeup, and the whole setup for that specimen for their entire
Human DNA is very similar to one another, but only about 0.1% is different from the next person. That 0.1% can tell a person’s eye color, hair color, and other physical features. DNA analyst are able to take a drop of blood, the size of a dime, and duplicate the number DNA found in that drop. With the ability to duplicate DNA, analysts can have a back-up, in the event a human error were to occur. Analyst can tell you exactly where your ancestors came from and the percentage that is still inside your DNA. DNA is a very powerful tool that can identify a murder if the individual left any blood, saliva, skin tissue, hair or semen. The education needed to be able make use of the DNA consists of a great deal of science classes.
DNA is the genetic material that makes up the characteristics of all living organisms. While all human DNA is very similar in nature, there is just enough differences in
The DNA contains the information needed to make up our body and even our hands.
Biology is a broad field, covering the minute workings of chemical machines inside our cells, to broad theories of ecosystems and global climate change.
Different characteristics of species allows for the types of niches that can be occupied and whether or not they can be coexisted for example a food specialist will have anatomical and physiological adaptations that allow it to acquire and extract energy and nutrients from one food source extremely well, but will be at a disadvantage if that food source runs low. A food generalist may not acquire as much energy from the specialist’s preferred food, but will be able to make up for that by consuming other kinds of food. We can easily envision circumstances in which either species might outcompete the other. To achieve coexistence of species the carrying capacities of certain species must not be overshot and remain
Each human being has something called DNA. DNA is described as genetics and an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms. DNA constructs of two nucleotide strands coiled around each other in a ladder like arrangement with the sidepieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine. Each chromosome consist of one continuous thread-like molecule of DNA coiled tightly around proteins and contains a portion of the 6,400,000,000 basepairs that make up your DNA.
The Law of Conservation of Energy, derived from centuries of observation and measurement, indicates that energy cannot be created or destroyed. But energy need not stay in one place. Energy can be converted from one form to another and can be created in one place and show up in another. Remember that energy, in an open system, can do work on the surroundings or supply heat to the surroundings.�
All energy used by living organisms ultimately comes from the sun. energy enters living systems through photosynthesis by plants and some bacteria. (MHHE, N.D)
DNA Profiling exists in blood, bone, hair follicles, saliva, semen, skin and sweat. They are the same in every cell and retain their distinctiveness throughout an individual’s lifetime.
DNA is one of the most important pieces of evidence that a criminal justice agent can use in a court of law. There ae slim to no crimes committed that doesn’t have some type of DNA evidence left behind. Some DNA evidence could be, but not limited to, fingerprints, blood, hair, and any other bodily fluids. DNA is known as Deoxyribonucleic Acid, and is one of two types of molecules that encode genetic information (Medicine.net, 2017). DNA is characteristically unique to each person individually, unless they are a twin. DNA dictates a person’s look such as their eye color, blood type, height, hair color, skin color, etc. With this genetic information, intense testing can be done to find who may be connected to the genetic makeup of each stand
Evolutionary biology: the study of the origins and changes in the diversity of life over time 6. Genetics: the study
Extinction: Most species become extinct because they can’t cope with the environmental change, and also because of introduced species that turned into competitors for
As the energy moves through the system, nutrients also travel through the levels of the food chain through the predator prey feeding cycle active in the food chain. To summarize the nutrients are cycled through the food web and the energy is not.
Within communities, organisms compete for limited resources (food, space, mates, shelter). 613 of our native species (plants, birds, fish), compete with 240 introduced plant species, 19 introduced bird species, 9 introduced mammals and 2 amphibians. It is estimated that we have lost 30 native bird species due to this competition.
What is DNA? Is it these winding strands that look like ladders or is it what gives a person blonde hair and blue eyes? Actually, DNA is both of these things. DNA is a person’s genetic makeup–their hereditary blueprint passed on by their parents. It is a part of almost every cell in the human body. In each cell, a person’s DNA is the same; it stays the same throughout their lifetime. DNA is found in skin tissue, sweat, bone, the root and shaft of hair, earwax, mucus, urine, semen, and vaginal or rectal cells. The DNA found in a person’s saliva is the same as the DNA found in their blood. Parts of the DNA determine our physical characteristics, such as eye and hair color, height, and bone structure, but the